dude i did this conversion before , i had an 84 model hilux , with the 3y 1800 .4spd .. alls i did was used 2 driverside 3y mounts welded up the existing engine mount holes redrilled to suit the 1ggte engine block ... It bolts strait in the existing 2 piece tailshaft fits straight up to the w58 gearbox... it took 2 weeks and it was on the road in no time ..